Wrench.



110.306,32?. PATBNTBD DBC. 5, 1905. aH. F. DIGKINSON.

WRENCH;

APPLICATION FILED JULY 22, 1904.

HENRY F. DIOKINSON, OF LAFAYETTE, COLORADO.

WRENCH.

Specification of Letters Patent.

Patented Dec. 5, 1905.

.Application iiled July Z2, 1904. Serial No. 217,640.

To all whom it may concern:

fayette, in the county of Boulder and State of Colorado, have invented certain new and useful Improvements in Wrenches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyimc,r drawings, and to the letters .of reference marked thereon, which form a part of this speciiication.

My invention relates to improvements in wrenches; and, generally speaking, it consists of means for quickly releasing and connecting the movable jaw of the wrench with the bar vupon which the said jaw slides.

In my improved device the bar of the body of the wrench is provided with ratchet-teeth or notches, and upon the movable .jaw is mounted a locking dog or device provided with teeth or notches adapted to interlock with the toothed edge of the'bar when the jaw is locked upon the bar or in position for use. A cam-lever, also mounted on the movable jaw, is connected with the locking-dog, whereby the latter is manipulated or thrown from the locking to the unlocked position, or vice versa.

Having briefly outlined my improved construction, as well as the function it is intended to perform, I will proceed to describe the same in detail, reference being made to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a side elevation of a wrench equipped with my improvements. Fig. 2 is a similar View with parts shown in section. Fig. 3 isa detail view of the locking device. Fig. 4 is a detail sectional view of the cam-lever.

The same reference characters indicate the same parts in all the views'. I I

Let A designate the stationary jaw of a wrench, said jaw being rigidly connected with the bar A,lhavinga toothed edgeAz. Upon the toothed portion of the bar A is slidably mounted a jaw B. This jaw carries a locking device C, pivotally connected with the jaw by a pin O. The edge of this locking device adjacent the toothed edge of the wrench-bar is toothed, as Shown at C2, to engage the teeth of the bar. The extremity of the locking device remote from its pivotal end is slotted, as shown at C3,

55 to receive an actuating-pin D, mounted on the cam-lever D, the latter being fulcrumed on the jawB by a pin D2 and bifurcated to straddle the slotted extremity of the locking device. The locking device is provided on itsI toothed edge with a rearwardly-projecting part O4, which extends beyond the slot Cs and passes between the fulcrum D2 of the camlever and the wrench-bar A'.

Attention is called to the fact that the movable jaw is bifurcated adjacent the toothed edge of the bar A to receive the locking device and the cam-lever, the said members passing between the bifurcated parts B' and B2. Between these bifurcated parts the jaw is open, as shown at B3, to permit access to the cam-lever for the purpose of manipulating the locking device.

From the foregoing description the use and operation of my improved device will be readily understood. When it is desired to slide the jaw B freely on the bar A', the cam-lever is raised and its pin D, by virtue of its engagementwith the slot O3 of the locking device, lifts the latter suiiiciently to disengage its teeth from the toothed bar A. The lever and locking device are then in the position shown in Fig. 2. As soon as the jaw has been properly adjusted the cam-lever is thrown down to the position shown in Fig. 1, whereby the pin D passesout of the slot O3 and acts on the projection C4 of the locking device to force the latter inwardly, whereby its teeth are caused to interlock with the teeth of the bar A. The movable jaw is thus locked in the adjusted position and the device is ready for use, the partsl being in the position shown in Fig. 1 of the drawings.

Having'thus described my invention, what I claim is* 1. Ina wrench, the combination of atoothed or notched shank, a jaw slidable thereon, va locking device mounted on the movable jaw and toothed or notched to interlock therewith, a lever fulcrumedon the movable jaw and having an actuating-pin located beyond its ful- 10 crum, and occupying a position parallel with the axis of the latter, the portion of the lever carrying the pin, being bifurcated to straddle the rear extremity of the locking device, the latter being provided with a slot open in the rear which -slot the actuating-pin engages to lift the dog from engagement with the bar, said locking device having a rearward projection located between the lever-fulcrum and the wrench-bar, the said projection extending in the rear of the slot and forming a bearing for the actuating-pin when the locking device is in the locked position.

2. The combination of a wrench-bar, a jaw slidably mounted thereon and cooperating with the stationary jaw with which' the said bar is provided, the movable jaw being provided with two bifurcated parts located on opposite sides of an opening, a locking device connected Withone of the bifurcated parts and passing through the opening in the other bifurcated part, a lever fulcrumed on the lastnamed bifurcated part and provided with an actuating-pin occupying a position parallel with the axis of its fulerum, the said pin being adapted to engage the locking device, the latter having a slot open in the rear to receive HENRY F. DICKINSON. Witnesses:

A. J. OBRIEN, vDENA NELSON. 

